Telegraphy.



PATENTED JUNE 2, 1908 I. KITSEE. TELEGRAPHY.

APPLICATION rum) NOV. 17,1906.

I NVENTOR WITNESS I'SIDOR KITSEE, or PKHILADELPHIA,PENNSYLVANIA.

TELEGRAPHY.

speciflcatio n of Letters Patent.

Patented June 2,1908. v I

' Application filed November, 17, 1906. Serial No. amaze.

To all whom 'ltma'y concern."

Be'it known that I, Ismon Krrsnn, citizen of the United States, residin at Philadelphia,

in the county of Philadelp ia and State of Pennsylvania, have invented certain new and useful Improvements in Telegraphy, of which the following is a s ecification.

My invention re ates toan im rovement in telegraphy, and has more s ecia reference to such systems where rapidly recurringor alternating im ulses, or oscillating waves, are used, as or instance in .telegraphing through the natural medium.

In some instances where a spark gap is used in the receiving circuit, the incoming impulses are not intense enough to produce the necessary spark, and it is the aim of m invention to facilitate the'production of such spark even with very weak impulses. When two conductors are placed apart from each other, so that a space, or as it is technically called a spark-gap, is intervening, the resistance of this gap is of so high a nature that very weak impulses will not be able. to break down this resistance and to overbridge the space between the two conductors. But,

if during the time that the impulses are.

flowing in one of these conductors, the second conductor is alternately and in rapid succession brought in contact with the first conductor and moved away from same, then the impulses will follow the movement of the second conductor and will overbridge the space between the two conductors when theyare moved apart, provided that the gap produced is not toolarge.

My invention contemplates a system of telegraphy wherein through such movements of one or both conductors, the efliciency of the incoming impulse asto the production of the spark is increased, and as itis necessary for me to show this my invention in operative relation, I have illustrated the same in the accom anying "drawing as applied to a system w erein the spar is made to actuate the local circuit through the expansion of an inflammable material, such as gas, in an inclosed space; it being obvious that m invention 1s a plicableto other systems w erein such spar are used. 7

Referring to the drawing, Figure 1 is a sectional elevation of a receiving device embodyin my invention and Fig. 2 is a plan view 0 same; the circuits inboth figures being in diagram. 1 and 2 are parts of the receiving circuits;

3 and 4 are the terminals of same; 7 is an inclosure. In the drawing, the terminal 3 is illustrated as bein stationary and the terminal 4 is illustratet as being adjustable with the aid of its screwthreaded art 5 fitting into the threaded portion 6. e terminal 4 is rovided withthe lever 12 secured to 4 wit the aid of the removable screw 15. The lever 12 carries the armature 13 andv in juxtaposition to said armature is the electro-ma net 14; the coil thereof is connected throug' wire 16 with the adjustable contact 17 and with'the other terminal through wire 19 with the source of current, here shown as batteries 20, the free pole of which is connected with the interposition of the switch 21 to-the lever 12. In its normal position, this lever is held in'contact with the screw 17 by the spring 18.

This part of the arrangement is nothmg more or less than a sim le make and break. When the switch 21 is c osed, the electro-magnet 14 is energized, thereby bringing down the armature 13 and with. it the lever 12. Throughthis movement, the contact be tween 17 and 12 is broken; the eleotro-magnet 14 is deenergized and the, spring 18 mil again move the lever 12 upwards and in contact with 17. This-movement is repeated as long as the switch 21 is closed. Through this movement, the screw threaded portion 5 causes the part 4 to come alternately in contact with 3 and out of contact with same, in a manner so that alternately a gap is produced and destroyed-between the extreme parts of 3 and 4.

I am aware that instead of the rotary movement with the aid of a screw, other movements may be substituted, but I have found that this movement is in practice the best suited for the arrangement'as illustrated.

The inclosure 7 is in reality a gas chamber, or.

as it is technically called an .explosive chamber. The gas is admitted to this chamber with the aid of the means, here shown as'a pipe 10; thechamber' is provided with the twocheck valves 9 and 8. As this part of my-invention is notclaimed per se in this application, it is unnecessary. to dwell more particularly on the ofiice of this chamber and the gas admitted therein. It suflices to say that it is here proposed to inflame the gas to actuate through the expansion the check valve 8, and for this urpose, this check valve may be connected with a local circuit containing necessary devices and the terminals of this local circuit are indicated by localized translatin with a localized circuit the numerals 23, 25 and 26. In the practical working of this arrangement, it is advised that, first of all,'the screw 15 should be removed, so also the lever 12 and the two con- I claim as new and desire to secure by Letters Patent is 1. In telegraphy, a receiving circuit and means to alternately make and destroy an air-gap between two terminals of said receiv-- ing circuit independent of the action of the transmitting means, in combination with a localized circuit adapted to be operated through the'heating effect of the incoming impulses over-bridging said air-gap.

2. In telegraphy, a receiving device comprisin two receiving terminals, at least one of sai terminals being movable, and means to alternately bring said terminals into and out of contact with each other for the forma tion of an air gap independent of the action of the transmitting means, in combination adapted to be operated through the heating effect of the incoming impulses over-bridging said air-gap.

3. In combination with two receiving terminals provided with an air gap, automatic means to alternately and in quick succession destroy and make said air gap independent of the action of the transmitting means and device adapted to be operated through the movement of a conductor due to the heating effects of the electric energy over-bridging said air-gap.

' 4. In combination with receiving terminals provided with an air-gap, electromagnetic means to alternately make and destroy said air-gap independent of the action oi the transmitting means said air-gap inclosed ina chamber, the gaseous contents of which are adapted to be operated through the heating effect of the incoming impulses.

5, A telegraphic receivin device comprising an inclosure, terminals or said inclosure, means to introduce an imflammable medium in said inclosurc and means to automatically make and destroy the gap between said terminals,

6. In'a receiving device wherein the heating effect of a spark is employed to actuate a localized device, means automatic in their action to alternatelyproduce and destroy an air gap between two terminals connected to the receiving terminals, and a localized device to be actuated through the heating effect of a spark at said air gap.

7. In a telegraphic receiving device, two

terminals, and means to alternately join and separate said terminals independent of the action of the transmitting means said terminals surrounded by an inflammable medium.

8. A telegraphic receiving device, comprising a receiving circuit, relatively movable terminals for said circuit, means for causing relative movement between said terminals to alternately make and destroy a spark-gap,

and means for actuatinga localized device through the heating effect of a spark at said spark-gap;

9. A telegraphic receivln device, comprislng a receiving circuit, re

atively movable terminals for said circuit, means for causing relative movement between said terminals in quick succession to alternately make and destro a spark-gap, and means for actuating a loca ized device through the heating efl'ect of a spark at said spark-gap.

10. In wireless telegraphy, an antenna, a ground, means to alternately, make and break the contact between said antenna and ground, a gaseous medium, a localized circuit and means to operate said localized circuit through the change in said gaseous medium .due to the incoming impulses.

In testimony whereof I affix mv signature presence of two witnesses ISIDOR KITSEE.

VVitn'esses:

EDITH R. STILLEY, ALVAH RITTENHOUSE. 

